/*
    宏演示
*/
#include <stdio.h>
#define    SQUARE(x) 	((x) * (x))
int main() {
    int num = 5;
    printf("SQUARE(6) = %d \n",SQUARE(6));
    printf("SQUARE(++num) = %d \n",SQUARE(++num));
    return 0;
}
